How to Set or Change Hostname on CentOS Stream 10

To change the hostname on CentOS Stream 10, follow these simple steps:

Step 1 : Run the following command to display the current hostname:

hostname

Step 2 : Use the hostnamectl command to set a new hostname. For example:

sudo hostnamectl set-hostname server-01

Step 3 : To ensure the hostname has been updated, check the contents of the /etc/hostname file:

cat /etc/hostname

Step 4 : Open the /etc/hosts file with a text editor:

sudo nano /etc/hosts

Replace the old hostname with the new one where applicable, then save and exit.

Step 5 : Restart your system to apply all changes:

sudo reboot

Congratulations! You have successfully set or changed the hostname on your CentOS Stream 10 system.